No, in this configuration it only did young and mixed GCs before it was killed by the system. I've fallen back to CMS for now, but when we upgrade java I might try G1 again to see if this is resolved.
On Thu, Feb 23, 2017 at 3:53 AM, Thomas Schatzl <thomas.scha...@oracle.com> wrote: > Hi, > > On Tue, 2017-02-21 at 10:52 -0800, Will Bertelsen wrote: > > Hi All, > > > > I've been experimenting with G1 in production and have noticed a > > large native memory leak that eventually exhausts all memory on the > > system. I ran it overnight with NMT enabled and this was the biggest > > offender: > > > > [0x00007f86c31cf205] Hashtable<oopDesc*, > > (MemoryType)9>::new_entry(unsigned int, oopDesc*)+0x165 > > [0x00007f86c35dd263] StringTable::basic_add(int, Handle, unsigned > > short*, int, unsigned int, Thread*)+0xd3 > > [0x00007f86c35dd452] StringTable::intern(Handle, unsigned short*, > > int, Thread*)+0x182 > > [0x00007f86c35dd921] StringTable::intern(oopDesc*, Thread*)+0x131 > > (malloc=2628520KB +2601784KB #328565 > > +325223) > > > > > > Has anyone seen this before? > > This is just a workaround, but if the application runs for so long that > it never does a full gc or do a marking cycle (did it?), you could > manually trigger string table cleanup by issuing a system.gc with jmap > now and then. > If you set -XX:+ExplicitGCInvokesConcurrent, it will not be a stop-the- > world gc. > > There is no equivalent to CMSTriggerInterval in G1 which starts a > regular concurrent collection cycle every now and then (which is > basically the same band-aid). > > > Here is my java version and gc settings: > > > > java version "1.8.0_45" > > Java(TM) SE Runtime Environment (build 1.8.0_45-b14) > > Java HotSpot(TM) 64-Bit Server VM (build 25.45-b02, mixed mode) > > You may want to update. While looking for something similar in the bug > tracker, I found e.g. https://bugs.openjdk.java.net/browse/JDK-8133193 > fixed in 8u72. > > Thanks, > Thomas > >
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